USA weather in September 2021

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Below are average maximum temperatures at popular destinations in the USA in September. Select a destination to see more weather parameters.

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The September weather guide for USA shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

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How hot is it in the USA in September?

Daytime temperatures usually reach 26°C in Washington, USA in September with low heat and humidity, falling to 15°C at night.

How sunny is it in the USA in September?

There are normally 7 hours of bright sunshine each day in Washington, USA in September - that's 60% of daylight hours.

Does it rain in the USA in September?

There are usually 7 days with some rain in Washington, USA in September and the average monthly rainfall is 87mm.

What is the chance of a hurricane in the USA in September?

On average less than 1 day in September in Washington, USA is likely to be affected by the passage of one or more tropical storms.

Metric (°C / mm)  |  Imperial (°F / inches)

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USA sunrise & sunset times for September 2021

Browse the sunrise and sunset times for USA in September 2021. Select a month to view USA sunrise & sunset times for the next 12 months. The USA sunrise and sunset times shown below are for Washington.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st September 2021 05:37 18:38
Wednesday, 15th September 2021 05:50 18:16
Thursday, 30th September 2021 06:03 17:52
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